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For each problem, select the best response. (a) In a scatterplot of the average price of a barrel of oil and the average retail price of a gallon of gasoline, you expect to see A. a positive association. B. very little association. C. a negative association. D. None of the above. (b) What are all the values that a correlation r can possibly take? A. -1 ≤ ≤ r ≤ ≤ 1 B. r ≥ ≥ 0 C. 0 ≤ ≤ r ≤ ≤ 1 D. None of the above. (c) You have data for many years on the average price of a barrel of oil and the average retail

For each problem, select the best response. (a) In a scatterplot of the average price of a barrel of oil and the average retail price of a gallon of gasoline, you expect to see A. a positive association. B. very little association. C. a negative association. D. None of the above. (b) What are all the values that a correlation r can possibly take? A. -1 ≤ ≤ r ≤ ≤ 1 B. r ≥ ≥ 0 C. 0 ≤ ≤ r ≤ ≤ 1 D. None of the above. (c) You have data for many years on the average price of a barrel of oil and the average retail

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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For each problem, select the best response. (a) In a scatterplot of the average price of a barrel of oil and the average retail price of a gallon of gasoline, you expect to see A. a positive association. B. very little association. C. a negative association. D. None of the above. (b) What are all the values that a correlation r can possibly take? A. -1 ≤ ≤ r ≤ ≤ 1 B. r ≥ ≥ 0 C. 0 ≤ ≤ r ≤ ≤ 1 D. None of the above. (c) You have data for many years on the average price of a barrel of oil and the average retail price of a gallon of unleaded regular gasoline. When you make a scatterplot, the explanatory variable on the x -axis A. is the price of oil. B. is the price of gasoline. C. can be either oil price or gasoline price. D. None of the above
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